pfootmom

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Question Asked: 02 Sensor and Random Misfire
November 27, 2010, 11:18 PM
Car running badly and stalling. Ran code reader- codes 137, 141 and 0300. Replaced O2 sensor #2. still get random misfire and engine light came on after erasing codes. Ran code reader again, code 0300. What could it be? What causes random misfire?
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